How to unsubscribe?

Can anybody tell me how to unsubscribe from this mailing list (and from
other Daresbury bio lists)?
I know pretty well that this is not a right question to put in the list,
but I have written to biosci at daresbury..., postmaster at daresbury.. etc and
have not get any answer. Also I have tried all the LISTSERV commands I know,
but without success.
Sincerely,
Mihkel Tammepuu
mihkel at bio.kbfi.tll.ew.su